AL Insulation Practice Questions - Alabama Insulation Contractor Examination Exam

When installing rigid foam below grade on foundations, boards should be:

Compatible with below-grade exposure and protected as required from damage and UV before backfill Left with large open gaps at every corner intentionally Used only above the roof ridge Dissolved in solvent and painted on like stain

Correct Answer:

Compatible with below-grade exposure and protected as required from damage and UV before backfill

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